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ELECTRICAL WIRING
CAUTION:
Please select power source for indoor unit and outdoor unit
respectively.
The power supply has specified branch circuit with leakage
protector and manual switch.
The power supply leakage protector and manual switch
on all the indoor unit connecting to the same outdoor unit
should be universal.(Please set all the indoor unit power
of one system into the same branch circuit.)
Please put the connective piping system between indoor
unit and outdoor unit with the refrigerant system together.
Use 2-core screened wire as indoor and outdoor control
wire.
Please design a separate circuit for compressor heater
inside the unit for it is frequently heated in using season.
The installation should comply with relevant national electric
standard.
Power wiring should be engaged by specialized electrician.
POWER WIRING
< Outdoor Unit Wiring>
Separate Power Supply (without power facility)(Table 1)
Selection of the Power Cable
ITEM
Power
2
(mm ) (Please use wire tube
source
MODEL
to wrap the cables)
MDV-D100W/S
380V
RVV-450/750
MDV-D140W/S
2
3N~
5*2.5mm
MDV-D100W/SN
2
50Hz
MDV-D140W/SN
2
< Indoor Unit Wiring>
Separate Power Supply (without power facility)(Table 2)
ITEM
Selection of the Power Cable
Power
(mm ) (Please use wire tube
2
source
MODEL
to wrap the cables)
RVV-300/500
Non Electric
220V~
2
3*1.5mm
Heating
50H
Z
With Electric
220V~
RVV-300/500
Heating
50H
Z
3*2.5mm
2
<Signal Wiring for the Controller> (Table 1)
NAME
TYPE
The shied surface of the cable must be
RVVP-300/500
Insulation Shield Cable
connected to the signal endding(E) of
2*0.5mm
the outdoor and indoor unit
NOTE: The wire diameter and continuous length is under the
condition that the voltage vibration is within 2%. If the
continuous length is exceed the above value, choose
the wire diameter according to relevant regulation.
FOR Model:
MDV-D100W/S
MDV-D100W/SN
2
MDV-D140W/S
MDV-D140W/SN
2
Leakage protector
Manual
Outdoor power
switch
supply
380V 3N~
50Hz
Outdoor
unit
Leakage protector
Manual switch
Outdoor
unit
Outdoor
unit
Outdoor
unit
Outdoor
unit
Junction part
Outdoor
unit
NOTE:
1. Please connect the signal wire correctly, for they have
difference of anode and cathode.
2. Please do not put the signal wire and the power wire
in the same wire tube; the distance between the two
wire tube must be in the range of 300~500mm.
3. Refrigerant piping system, indoor unit -indoor unit signal
wires and indoor unit-outdoor unit signal wire are in the
same system.
4. After finishing connection, do not use Megger to have
insulation check to the signal wire.
TEST RUNNING
Operate according to "gist for test running" on the electric control
box cover
Test running can not start until the outdoor unit has been
connected to the power for 12hr.
Test running can not start until all the valves are affirmed open.
Never make the forced running .(Or the protector sits back ,
danger will occur.)
FILL THE NAME OF CONNECTION SYSTEM
To clearly identify the connection systems between two or
Manual switch(A)
Leakage
more indoor unit and outdoor unit, selects names for every
Capacity Fuse
protector
system and records them on the nameplate on the outdoor
electric control box cover.
100mA
16
25
0.1sec or
less
Manual switch(A)
Leakage
Capacity Fuse
protector
10
5
20A 30mA
PRECAUTION ON REFRIGERANT LEAK
0.1sec or
less
25
16
This air conditioner (A/C) adopts R407C or R22 as refrigerant,
which is innocuous and nonflammable. The locating room of
the A/C should big enough that any refrigerant leakage is unable
NOTE
to reach critical thickness. So certain essential action can be
taken on time.
Critical thickness------the Max. thickness of Freon without
any harm to person.
Refrigerant critical thickness: 0.3[kg/m ]
Confirm the critical thickness through follow steps, and take
necessary actions.
1. Calculate the sum of the charge volume (A[kg]) Total
Refrigerant volume of 10HP= factory refrigerant volume +
superaddition
2. Calculate the indoor cubage (B[m ]) (as the minimum
cubage)
3. Calculate the refrigerant thickness
End of Grounding
Countermeasure against over high thickness
1. Install mechanical ventilator to reduce the refrigerant thic-
Grounding
kness under critical level. (ventilate regularly)
2. Install leak alarm facility related to mechanical ventilator if
Grounding
you can not regularly ventilate.)
Grounding
Grounding
Grounding
Grounding
TURN OVER TO CUSTOMER
The owner's manual of indoor unit and owner's manual of
outdoor unit must be turned over to the customer.
Explain the contents in the owner's manual to the customers
in details.
O
X
Chart 16
CAUTION:
Model of indoor unit
Room Name
For example: Indoor unit (A)
of the first system on second
floor is record as:
2F 1A.
3
3
A[kg]
3
critical thickness: 0.3[kg/m ]
3
B[m ]
Outdoor unit
Indoor
unit
Room full of leak refrigerant
(All refrigerant has run up)
b. Leak alarm related to mechanical ventilator
Indoor unit
A. Ventilation
peristome
(Leak hunting siren should be installed
in places easily keep refrigerant)
£¬
(E)
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